Friday, Oct. 17, 2014

Have a safe day!

Friday, Oct. 17

3:30 p.m.
Director's Coffee Break - WH2XO

4 p.m.
Joint Experimental-Theoretical Physics Seminar - One West
Speaker: Lisa Whitehead, University of Houston
Title: Hitting from the Baseline: Long-Baseline Neutrino Studies

Monday, Oct. 20

2 p.m.
Particle Astrophysics Seminar - Curia II
Speaker: Nickolay Gnedin, Fermilab
Title: Cosmic Reionization on Computers

3:30 p.m.
Director's Coffee Break - WH2XO

4 p.m.
All Experimenters' Meeting - Curia II

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Wilson Hall Cafe

Friday, Oct. 17

- Breakfast: French bistro breakfast
- Breakfast: chorizo and egg burrito
- Smoky Mountain chicken breast sandwich
- Pork piccata with lemon sauce
- Vegetarian eggplant lasagna
- Cuban panino
- Breakfast-for-lunch omelet bar
- New England clam chowder
- Texas-style chili
- Assorted pizza by the slice

Wilson Hall Cafe menu

Chez Leon

Friday, Oct. 17

Wednesday, Oct. 22
Vegetarian special
- Sweet potato and chickpea cakes with avocado salsa
- Sauteed lemony broccolini
- Rustic fruit tart

Chez Leon menu
Call x3524 to make your reservation.


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From LC NewsLine

Full ILC-type cryomodule makes the grade

Cryomodule 2, located in Fermilab's NML building, reached an important SRF milestone earlier this month. Photo: Reidar Hahn

For the first time, the ILC gradient specification of 31.5 megavolts per meter has been achieved on average across all of the eight cavities assembled in an ILC-type cryomodule. A team at Fermilab reached the milestone earlier this month. It is an achievement for scientists, engineers and technicians at Fermilab and Jefferson Lab in Virginia as well as their domestic and international partners in superconducting radio-frequency technologies.

The cryomodule, called CM2, was developed and assembled to advance superconducting radio-frequency technology and infrastructure at Americas-region laboratories. The CM2 milestone achievement has been nearly a decade in the making, since U.S. scientists started participating in ILC research and development in 2006.

"We've reached this important milestone and it was a long time coming," said Elvin Harms, who leads the cryomodule testing program at Fermilab. "It's the first time in the world this has been achieved."

Read more

Joykrit Mitra

From the University of Chicago

CIE + Cisco Innovation Challenge finalist spotlight: CEMAS team at Fermilab

These Fermilab employees are members of one of the finalist teams in the CIE + Cisco Innovation challenge. From left: Adam Lyon (SCD), Jin Chang (OCIO), Irwin Gaines (OCIO), Don Holmgren (SCD). Not pictured: Ray Pasetes (CCD), Wenji Wu (CCD). Photo: Reidar Hahn

On Sept. 30, the Chicago Innovation Exchange and Cisco announced that CEMAS was one of three finalists for the CIE + Cisco Innovation Challenge.

CEMAS, Cloud-based Event Monitoring and Storage technology, supports emergent Internet-aware devices from the Internet of Everything, providing a central hub for storage and event monitoring of data generated by objects and sensors. The team is working to develop partnerships that would support proof-of-concept testing and commercialization of the service.

Led by Fermilab's deputy CIO, Jin Chang, the team also includes Adam Lyon, scientist; Irwin Gaines, scientist; Don Holmgren, computer services architect; Ray Pasetes, system architect; and Wenji Wu, computer science researcher; all at Fermi National Accelerator Laboratory.

We asked the team a few questions to learn more about their venture:

Q. What's the core challenge your technology solves?
A. Providing cost-effective solutions to collect data from multiple sources with real-time data selection and support for efficient data retrieval and analysis.

Q. What was the genesis of your technology? What started you down this path?
A. Our technology was originally developed to meet the extreme challenges of acquiring, archiving and analyzing the massive amounts of data necessary to do high-energy physics experiments. Searches for rare phenomena such as the production of the top quark and the Higgs boson required collecting petabytes of data from millions of distinct data sources, using highly intelligent real-time monitoring and selection algorithms to choose the correct data for preservation and to ensure proper operation of highly complex detectors. The need to develop highly cost-effective solutions forced us to develop our own innovative approaches to these data handling challenges.

Read more

Nikki Kidd

In Brief

Open enrollment for Fermilab employees begins today

Open enrollment for benefits will take place from Oct. 17-30. This is your opportunity to make changes to your medical, dental and flexible spending account elections for 2015. Changes made during open enrollment will be effective Jan. 1, 2015.

For more information, refer to the all-hands email that was sent on Thursday. The Benefits Office and your HR partner are available to answer your questions about open enrollment. Please email or call x3395 to make an appointment. You may also contact your division or section's assigned HR partner.

In the News

Upgrade set for dark-matter detector

From Physics World, Oct. 14, 2014

A vast upgrade to the XENON dark-matter experiment at the Gran Sasso National Laboratory in Italy is set to provide a significant increase in sensitivity by being able to better spot cosmic rays masquerading as dark-matter particles. Costing $11m and expected to start taking data in 2015, XENON1T will contain one tonne of xenon to hunt for weakly interacting massive particles (WIMPs) — a leading dark-matter contender.

Read more

In the News

Synopsis: Proton longevity pushes new bounds

From Physics, Oct. 14, 2014

Protons live a long time but perhaps not forever. Several theories predict that protons can decay, and a handful of experiments have tried to detect such an event. The Super-Kamiokande experiment in Japan has the longest track record in the search for proton decay, and its researchers have now published a new lower bound on the proton lifetime that is 2.5 times greater than their previous bound. The proton's observed stability places constraints on certain extensions of the standard model of particle physics.

Read more

Frontier Science Result: CMS

Off the beaten path

Most particles produced by proton collisions originate in the point where the beams cross. Those that do not are due to intermediate particles that travel some distance before they decay.

The main concern for most searches for rare phenomena is to control the backgrounds. Backgrounds are observations that resemble the one of interest, yet aren't. For instance, fool's gold is a background for gold prospectors. The main reason that the Higgs boson was hard to find is that most Higgs decays resemble b quark pair production, which is a million times more common. You not only have to find the one-in-a-million event picture, you have to identify some feature of it to prove that it is not an ordinary event.

This is particularly hard to do in proton collisions because protons break apart in messy ways — the quarks from the proton that missed each other generate a spray of particles that fly off just about everywhere. Look through a billion or a trillion of these splatter events and you can find one that resembles the pattern of new physics that you're looking for. Physicists have many techniques for filtering out these backgrounds — requiring missing momentum from an invisible particle, high energy perpendicular to the beam, a resonance at a single energy, and the presence of electrons and muons are just a few.

A less common yet powerful technique for eliminating backgrounds is to look for displaced particle trajectories, meaning trajectories that don't intersect the collision point. Particles that are directly created by the proton collision or are created by short-lived intermediates always emerge from this point. Those that emerge from some other point in space must be due to a long-lived intermediate.

A common example of this is the b quark, which can live as long as a trillionth of a second before decaying into visible particles. That might not sound like very long, but the quark is traveling so quickly that it covers several millimeters in that trillionth of a second, which is a measurable difference.

In a recent analysis, CMS scientists searched for displaced electrons and muons. Displaced tracks are rare, and electrons and muons are also rare, so displaced electrons and muons should be extremely rare. The only problem with this logic is that b quarks sometimes produce electrons and muons, so one other feature is needed to disambiguate. A b quark almost always produces a jet of particles, so this search for new physics also required that the electrons and muons were not close to jets.

With these simple selection criteria, the experimenters found only as many events as would be expected from standard physics. Therefore, it constrains any theory that predicts displaced electrons and muons. One of these is "displaced supersymmetry," which generalizes the usual supersymmetry scenario by allowing the longest-lived supersymmetric particle to decay on the millimeter scale that this analysis tests. Displaced supersymmetry was introduced as a way that supersymmetry might exist yet be missed by most other analyses. Experiments like this one illuminate the dark corners in which supersymmetry might be hiding.

Jim Pivarski

These U.S. physicists contributed to this analysis.
These members of the Scintillation Detector Development Group at Fermilab are working to invent new scintillator materials to be used for upgrades of the CMS calorimeters.
Photo of the Day

Sipping nectar

A bumblebee takes what it needs from a Mexican torch sunflower. Photo: Julianna Holden Mohler

Today's New Announcements

Wilson Hall closed for maintenance - Oct. 18-19

Ask Me About FermiWorks booth in atrium - Oct. 17, 20-22, 27-30

OSX 10.10 Yosemite not yet certified

Hollywood Palms Employee Appreciation Day

Batavia Rd. asphalt work - today

SharePoint for Contributors (end-user) - today

SharePoint Designer training - today

SharePoint for Contributors (end-user) - today

Main site ICW flush - Oct. 20-24

Interpersonal Communication Skills - Oct. 21

Lecture Series: Success and Failure in Engineering - Oct. 24

Muscle Toning by Bod Squad - register by Oct. 28

Excel 2010: Intermediate - Oct. 29

Managing Conflict - Nov. 5 (morning only)

Access 2010: Advanced - Nov. 12

Excel 2010: Advanced - Dec. 3

Wilson Fellowship accepting applications through Nov. 14

Featured ebook on neutrino physics

Pace Batavia Call-n-Ride service to Fermilab

International folk dancing Thursday evenings at Kuhn Barn

Scottish country dancing Tuesday evenings at Kuhn Barn

English country dancing at Kuhn Barn

Indoor soccer

Find new classified ads on Fermilab Today.